Football is back. A new CTE study asks what it costs.

Football season is back, bringing millions of Americans together around one of the country’s most beloved sports. But new research on chronic traumatic encephalopathy, or CTE, raises an uncomfortable question: What price are players paying for our entertainment?Host Megan McArdle explores the physical and cognitive toll of football and what responsibility fans have when they turn on a game.Subscribe to The Washington Post here.